Table 3.

Logistic regression model for prediction of resolved disease

Variable	Level	β	P value	Odds ratio (95% CI)
Intercept	—	0.68	0.128	—
Smear test result on first visit	No dyskaryosis v dyskaryosis	−1.22	<0.001	0.30 (0.20 to 0.43)
Colposcopic opinion	Normal v abnormal	−0.58	0.007	0.56 (0.36 to 0.85)
Age	Continuous	0.03	0.001	1.03 (1.01 to 1.05)
No of pregnancies	Continuous	−0.12	0.020	0.89 (0.80 to 0.98)
Smoking history	Never smoker v ever smoker	−0.41	0.035	0.67 (0.46 to 0.97)

Model accuracy: 68% correct; sensitivity 70%; specificity 65%; false positive rate 30%; false negative rate 36%.